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Method and device for controlling multiple safety protection and energy-saving charging

A technology of safety protection and control methods, applied in emergency protection circuit devices, circuit devices, battery circuit devices, etc., can solve the problems of expensive batteries, prominent energy-saving problems, and inevitable contact with the human body.

Active Publication Date: 2014-01-15
东莞市奇立电源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many fields require a battery pack above 42V to meet the power demand. When charging and standby, the charging port is exposed, and it is inevitable to come into contact with the human body. At this time, measures must be taken to prevent safety accidents caused by electric shocks and injuries caused by voltages exceeding safety regulations.
The target battery for high-power charging is expensive, and there are explosive safety hazards. There are often battery explosion accidents due to insufficient charging control protection, and the high-power charging system consumes a lot of reactive power and has a long standby time, and its energy-saving problems are prominent.

Method used

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  • Method and device for controlling multiple safety protection and energy-saving charging
  • Method and device for controlling multiple safety protection and energy-saving charging
  • Method and device for controlling multiple safety protection and energy-saving charging

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Such as figure 1 As shown, the multiple safety protection and energy-saving charging control method of the present invention includes the following steps:

[0034] 1) Prepare an AC input terminal, start current limiting resistor RT, input rectification filter circuit, input PFC circuit, power conversion circuit, power management circuit BMS, output rectification filter circuit, charging management circuit, battery management circuit, coupling feedback circuit, Charging port and battery pack;

[0035] 2) Between the AC input terminal and the start-up current limiting resistor, between the power management circuit and the supply power management circuit, between the power conversion circuit and the power management circuit, between the voltage terminals between the output rectification filter circuit and the charging port, respectively set One controllable switching device K1, K3, K4, K5, and one controllable switching device K2 is connected in parallel with the starting...

Embodiment 2

[0051] As shown in 3-2, the conduction switch Q1 in the control switch K1 can be replaced by a P-MOS transistor.

[0052] Or the conduction switch Q1 in the control switch K1 can be replaced by an NPN transistor, such as Pic 4-1 As shown, the base of the conduction switch Q1 is connected to the emitter of Q3 through a resistor R3, the emitter of Q3 is grounded through two resistors R3 and R4, and the emitter of Q1 is grounded through a resistor R2.

[0053] Another way like Figure 4-2 , which adds a triode Q4, its emitter is grounded, the collector is connected to Vaa through Q2 emitter, collector and resistor R1, the base is connected to Q3 collector and ground through resistors R6 and R7 respectively; the base of Q1 is connected to Q3 through resistor R4 Connect to the emitter of Q2 and ground through the resistor R5, and the other parts are connected with Figure 3-1 The connection method is consistent; the Q3 collector is connected to Vaa through the resistor R3, and t...

Embodiment 3

[0057] Such as Figure 5-2 with Figure 5-3 As shown, the command switch tube Q2 and the battery management control switch Q3 set in the control switches K1, K3, and K4 can be replaced by photocouplers, which can replace or replace one of them at the same time. Figure 5-1 It shows the pin indication when the photocoupler replaces the triode.

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Abstract

The invention discloses a method for controlling multiple safety protection and energy-saving charging. In the method, three grades of controllable switches are arranged on the front part, on the middle part and on the rear part of a charging system; simultaneously, a battery management circuit (BMS) is embedded into the charging system; the battery state and the charging operation are used as controlled objects; when the battery and a charging state accord with the requirement, the battery is charged; and when the battery state is abnormal, the charging stopping operation is realized sequentially by firstly cutting off the middle controllable switch to make the charging system in an underloading state, and secondarily cutting off the front switch and the rear switch to avoid damages to contacts caused by an arc discharge phenomenon generated by a heavy-load high current on the contacts so that the service life of the contacts is prolonged. The invention also provides a device for implementing the method. The device can realize an energy-saving and protection control technology of input zero power consumption in a high power charging standby state and output zero voltage at a charging port.

Description

technical field [0001] The invention belongs to the field of electronic circuits, and in particular relates to a control method and device for multiple safety protection and energy-saving charging. Background technique [0002] The safe voltage stipulated by international electrical safety standards should be lower than or equal to 42V. However, many fields require a battery pack above 42V to meet the power demand. The charging port is exposed during charging and standby, and it is inevitable to come into contact with the human body. At this time, measures must be taken to prevent safety accidents caused by electric shocks that exceed safety standards. The target battery for high-power charging is expensive, and there are explosive safety hazards. There are often battery explosion accidents due to insufficient charging control and protection. Moreover, the high-power charging system consumes a lot of reactive power and has a long standby time, and its energy-saving problems ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/04H02H7/18
Inventor 申清甫张家书
Owner 东莞市奇立电源有限公司
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